California prosecutors have announced a $14 million settlement with BP over violations in operating and maintaining underground storage tanks at gas stations in the state.

Attorney General Kamala Harris alleges that BP flouted safety regulations for the tanks at hundreds of gas stations over 10 years. Harris says that includes tampering with leak detection devices on tanks.

BP officials did not immediately return a call Thursday seeking comment on the settlement. The agreement requires approval by court officials in Alameda County.

Since 2011 California has reached settlements totaling about $36 million with other fuel companies over underground gasoline storage tanks.